I am not sure if anyone else here does a lot of work with spatial data but there is a reasonably active Slack for people who do that I stumbled across earlier this year.
Anyway, I created a #coop channel there. It is not really active but has 11 members so I thought people here would like to know it exists because the people in the channel are either working in coops or interested working in coops.
Apologies that it’s proprietary Slack and not open source Matrix or some such but unfortunately it is not my initiative!